FIXED: "uh oh, full_buf not emptied" error
ADDED: Save results to file

32. FILE *f
556. int open_file()

This only saves successfully resolved MAC address. Not everything shows
up in CLI. In CLI if Ubertooth finds even single packet it shows down
there and LAP is an arbitrary value but always same.
UPDATE: CLI search process printf

Noe this shows RSSI_Avg